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shader_jit_x64: Get rid of unnecessary last_program_counter variable.

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This commit is contained in:
bunnei 2016-04-09 11:24:48 -04:00
parent f3afe24594
commit 6e0319eec9
2 changed files with 2 additions and 6 deletions
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7
src/video_core/shader/shader_jit_x64.cpp
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@ -677,7 +677,7 @@ void JitCompiler::Compile_MAD(Instruction instr) {
} }
void JitCompiler::Compile_IF(Instruction instr) { void JitCompiler::Compile_IF(Instruction instr) {
RuntimeAssert(instr.flow_control.dest_offset > last_program_counter, "Backwards if-statements not supported"); RuntimeAssert(instr.flow_control.dest_offset >= program_counter, "Backwards if-statements not supported");
// Evaluate the "IF" condition // Evaluate the "IF" condition
if (instr.opcode.Value() == OpCode::Id::IFU) { if (instr.opcode.Value() == OpCode::Id::IFU) {
@ -708,7 +708,7 @@ void JitCompiler::Compile_IF(Instruction instr) {
} }
void JitCompiler::Compile_LOOP(Instruction instr) { void JitCompiler::Compile_LOOP(Instruction instr) {
RuntimeAssert(instr.flow_control.dest_offset > last_program_counter, "Backwards loops not supported"); RuntimeAssert(instr.flow_control.dest_offset >= program_counter, "Backwards loops not supported");
RuntimeAssert(!looping, "Nested loops not supported"); RuntimeAssert(!looping, "Nested loops not supported");
looping = true; looping = true;
@ -770,8 +770,6 @@ void JitCompiler::Compile_Return() {
} }
void JitCompiler::Compile_NextInstr() { void JitCompiler::Compile_NextInstr() {
last_program_counter = program_counter;
auto search = return_offsets.find(program_counter); auto search = return_offsets.find(program_counter);
if (search != return_offsets.end()) { if (search != return_offsets.end()) {
Compile_Return(); Compile_Return();
@ -839,7 +837,6 @@ void JitCompiler::Compile() {
FindReturnOffsets(); FindReturnOffsets();
// Reset flow control state // Reset flow control state
last_program_counter = 0;
program_counter = 0; program_counter = 0;
looping = false; looping = false;
code_ptr.fill(nullptr); code_ptr.fill(nullptr);

1
src/video_core/shader/shader_jit_x64.h
View file

@ -108,7 +108,6 @@ private:
/// Offsets in code where a return needs to be inserted /// Offsets in code where a return needs to be inserted
std::set<unsigned> return_offsets; std::set<unsigned> return_offsets;
unsigned last_program_counter = 0; ///< Offset of the most recent instruction decoded
unsigned program_counter = 0; ///< Offset of the next instruction to decode unsigned program_counter = 0; ///< Offset of the next instruction to decode
bool looping = false; ///< True if compiling a loop, used to check for nested loops bool looping = false; ///< True if compiling a loop, used to check for nested loops